Phase 4: API Design/Implementation + Zero Script QA

Backend API implementation and script-free QA

Purpose

Implement backend APIs that can store and retrieve data. Validate with structured logs instead of test scripts.

What to Do in This Phase

1. API Design: Define endpoints, requests/responses
2. API Implementation: Write actual backend code
3. Zero Script QA: Log-based validation

Deliverables

docs/02-design/
└── api-spec.md             # API specification